CVE-2022-22707

Name	CVE-2022-22707
Description	In lighttpd 1.4.46 through 1.4.63, the mod_extforward_Forwarded function of the mod_extforward plugin has a stack-based buffer overflow (4 bytes representing -1), as demonstrated by remote denial of service (daemon crash) in a non-default configuration. The non-default configuration requires handling of the Forwarded header in a somewhat unusual manner. Also, a 32-bit system is much more likely to be affected than a 64-bit system.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DSA-5040-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
lighttpd (PTS)	buster	1.4.53-4+deb10u2	fixed
	buster (security)	1.4.53-4+deb10u3	fixed
	bullseye (security), bullseye	1.4.59-1+deb11u2	fixed
	bookworm	1.4.69-1	fixed
	trixie	1.4.74-1	fixed
	sid	1.4.74-2	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Origin
lighttpd	source	stretch	(not affected)
lighttpd	source	buster	1.4.53-4+deb10u2	DSA-5040-1
lighttpd	source	bullseye	1.4.59-1+deb11u1	DSA-5040-1
lighttpd	source	(unstable)	1.4.64-1

Notes

[stretch] - lighttpd <not-affected> (Vulnerable code not present; the issue was introduced in later versions)
https://redmine.lighttpd.net/issues/3134
https://github.com/lighttpd/lighttpd1.4/commit/8c62a890e23f5853b1a562b03fe3e1bccc6e7664